SWDEV-385161 - Deprecate usage of env vars in HIP samples and tests (#363)

* SWDEV-385161 - Deprecate usage of env vars in HIP samples and tests env vars such as HIP_PATH, ROCM_PATH, HIP_COMPILER, HIP_RUNTIME, HSA_PATH etc are removed.

Change-Id: I280e20b291cfb14675846aae72d97fa5b3ad567d

catch/include/performance_common.hh

@@ -33,6 +33,9 @@ THE SOFTWARE.
 #include <hip_test_common.hh>
 #include <resource_guards.hh>
 
+#pragma clang diagnostic ignored "-Wunused-but-set-variable"
+#pragma clang diagnostic ignored "-Wunused-function"
+
 #if defined(_WIN32)
 #if defined(_WIN64)
 typedef __int64 ssize_t;